Package: inet.linklayer.ieee8021d.relay

Ieee8021dRelay

simple module

C++ definition

This modul forwards frames (~EtherFrame) based on their destination MAC addresses to appropriate ports.

It can work in two mode:

STP unaware mode (If no module connected to its STP gate): Looks up the frames destination address in the ~MacForwardingTable, if it found the address, sends through that port, or otherwise broadcasts it.
STP aware mode (If an ~STP or ~RSTP module connected to its STP gate): Handles BPDU frames. If relaying a message also checks the port's status in the InterfaceTable.

<b>See also:</b> EtherFrame, MacForwardingTable, Stp, Rstp

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
MacRelayUnitBase	simple module	(no description)

Parameters

Name	Type	Default value
macTableModule	string
interfaceTableModule	string
displayStringTextFormat	string	"proc: %p\ndisc: %d"

Properties

Name	Value	Description
display	i=block/switch
class	Ieee8021dRelay

Gates

Name	Direction	Size	Description
lowerLayerIn	input
lowerLayerOut	output
upperLayerIn	input
upperLayerOut	output

Signals

Name	Type	Unit
packetReceivedFromUpper	inet::Packet
packetReceivedFromLower	inet::Packet
packetDropped	inet::Packet
packetSentToLower	inet::Packet

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode
packetDropped	packets dropped		count, sum(packetBytes), vector(packetBytes)		none

Source code

//
// This modul forwards frames (~EtherFrame) based on their destination MAC addresses to appropriate ports.
//
// It can work in two mode:
// - STP unaware mode (If no module connected to its STP gate):
//     Looks up the frames destination address in the ~MacForwardingTable, if it found the address, sends through
//     that port, or otherwise broadcasts it.
// - STP aware mode (If an ~STP or ~RSTP module connected to its STP gate):
//     Handles BPDU frames.
//     If relaying a message also checks the port's status in the InterfaceTable.
//
// @see EtherFrame, MacForwardingTable, Stp, Rstp
//
simple Ieee8021dRelay extends MacRelayUnitBase like IMacRelayUnit
{
    parameters:
        @class(Ieee8021dRelay);
}

File: src/inet/linklayer/ieee8021d/relay/Ieee8021dRelay.ned